CFSv2 monthly mean SSTs (clim19912020)
 TrgMonth     SST34
   202501    -1.05
   202502    -0.86
   202503    -0.53
   202504    -0.37
   202505    -0.39
   202506    -0.40
   202507    -0.38
   202508    -0.32
   202509    -0.22